What does chemical damage do?

• A. Causes corrosion of metal fittings
• B. Increases flexibility of the hose
• C. Removes inner rubber entirely
• D. Breaks down the cement holding the rubber lining to the jacket

Answer: (D)

Chemical damage weakens the hose by attacking the interfaces and the adhesive that holds layers together. In a hose, the rubber lining is bonded to the outer jacket with cement, and chemicals can soften or dissolve that cement. When that bond fails, the lining delaminates from the jacket, compromising the hose’s integrity and leading to leaks or failure. This description best captures what chemical exposure does. Other effects like corrosion of metal fittings or making the hose more flexible aren’t the primary impact in this context, and removing the inner rubber entirely would be a different failure mode.